Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8598eff071e25cc…

MALICIOUS

PDF

77.9 KB Created: 2021-04-21 10:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f261aeb52f224c0b4f32188ab95007b5 SHA-1: 8e7c676df9ec6341d772e0a6740535266827ec63 SHA-256: e8598eff071e25cc5003ad3a7887f33ae04c5e48fad8a1995227667d5d5241fb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/strik?utm_term=how+to+watch+fifty+shades+freed+in+india PDF link annotation
    • https://jabekidedur.weebly.com/uploads/1/3/1/6/131636775/zudotadimumiv_lisometa_mobazezekuki_zejamapavaril.pdfIn PDF document text
    • https://todusoxi.weebly.com/uploads/1/3/3/9/133999566/zulugizewarul-jajovuwaw.pdfIn PDF document text
    • http://gtmedis.com/en_que_consiste_la_linea_de_montaje_de_henry_fordw936a.pdfIn PDF document text
    • http://yoptan.space/lavixunogadesopurunawih1xw5.pdfIn PDF document text
    • https://nivawapononagi.weebly.com/uploads/1/3/4/2/134234681/naferuzax.pdfIn PDF document text
    • http://card2card-perevod24.site/livret_temoin_de_mariage_a_imprimeraznb2.pdfIn PDF document text
    • https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/nalafavoxenu.pdfIn PDF document text
    • http://kieverts.xyz/how_long_is_the_mourning_period_in_islamor0ip.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/carbs_in_dunkin_donuts_small_hot_chocolateyqztu.pdfIn PDF document text
    • http://beautysale.site/rajutemuriwiwadaribgeut.pdfIn PDF document text
    • http://powerpoint4you.ru/jonorubilosij1q19.pdfIn PDF document text
    • http://stav-games.ru/what_does_code_s0900_mean_with_charterzkvxb.pdfIn PDF document text
    • http://bloomwithdeanna.com/605650117110q9p2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/getizar/buxeronitiwaru.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/28415330638.pdfIn PDF document text
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_aa0afe21150c4cbf82084a491eeeb46f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/fubexifuni.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/kedusi.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/50876835381.pdfIn PDF document text
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_8073f3a0e5e2445f9638bb6b4db52cbd.pdf?index=trueIn PDF document text
    • https://d1ee23ee-9ccf-45b0-80ef-1e1ff1f657c4.filesusr.com/ugd/9ef0c3_e5002d15bbee4da8b4638c9120ccc5ba.pdf?index=trueIn PDF document text
    • https://c01188fd-d8af-4b86-846b-090f7ecd58d8.filesusr.com/ugd/9058e5_cfbdedf138dd419bb182b11b45830a52.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/sulepilolemidabawubixix.pdfIn PDF document text
    • https://37e79482-e567-4eff-b449-6ea9b90d4679.filesusr.com/ugd/cff0cd_cc720ca5c1ca42ed9a17e585e91c3115.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/wisetugolikalexokopa.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/weather_in_spanish_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/canada_postal_codes.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF118 5232 bytes
SHA-256: 596d760e5a2d5cc3388dd1a12bc66c2645289fd8f3e7f8b992254a8bedd77d14
font_01_sfnt_off000102f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F8 11320 bytes
SHA-256: 22a0e2ff117c7622512f1816d37b52b5b73f610ab2bf11dea9315e48f07a9818

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